Chemistry for Biologists

Photosynthesis

1. If light intensity increases in an atmosphere of excess carbon dioxide, the limiting factor on the rate of photosynthesis is most likely to be:
light intensity
chlorophyll type
temperature
carbon dioxide concentration
2. Phosphoglyceric acid (PGA) is formed when carbon dioxide is fixed onto the 5C compound:
adenosine monophosphate
nicotinamide adenine dinucleotide phosphate
ribulose bisphosphate
edenosine triphosphate
3. The first stable product of the Calvin Cycle is:
ADP
NAPD
ATP
PGA
4. The greenhouse effect is likely to:
increase the rate of photosynthesis globally
have no effect on the rate of photosynthesis globally
decrease the rate of photosynthesis globally
reduce the rate at which carbon is incorporated into carbohydrate globally
5. In photosynthesis, carbon dioxide is fixed during:
the light-independent stage
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
6. In photosynthesis, excited electrons leave a chlorophyll molecule during:
the light-dependent stage
the light-independent stage
non-cyclic phosphorylation
cyclic phosphorylation
7. In the light-independent stage carbohydrate is synthesized from:
ADP
NAPD
ATP
PGA
8. The two principal stages of photosynthesis are:
photolysis and ATP synthesis
photosystem I and photosystem II
the light-dependent and light-independent reactions
cyclic and non-cyclic phosphorylation
9. In photosynthesis, carbohydrates are produced during:
the light-dependent stage
non-cyclic phosphorylation
cyclic phosphorylation
the light-independent stage
10. In photosynthesis, oxygen is produced during:
non-cyclic phosphorylation
cyclic phosphorylation
the light reactions
the light-dependent stage

 

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